John tingley



@uitrit tatrs latrnt @fitte Letters PatentNo. 74,259, dated Feruarg/ 11, 1868.

IMPROVED ICE-CREAM PREEZER.

ein Segnale nient te in tlgra tsttcts attut mit making ont uf ilge stun.

TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOIIRTINGLEY, of Philadelphia, Pennsylvania, have Yinvented an Improved IeeCream Freezer; and I (lo hereby declare the following to be a full, clear, and exact description of tbe same.

My invention consists, firstly, of an ice-cream freezer, in which an outer vesselcontaining the ice, and an inner vessel containing the cream, as well as the dasher withinthe latter., are turned in one direction, while the dasber is at the same time rotated witbin'the vessel, the cream being by this means thoroughly agitated and exposed to tbeice contained between the two vessels; and my invention consists, secondly, of a dasher, constructed in the peculiar manner fully described hereafter, for effectually scraping the frozen cream from the vesseLnnd for ready removal .from the same.

In order to enable others to make and use my invention, I will now proceed to describe its construction and operation, reference being had to the accompanying drawing, which' forms a part of this specification, and in which- Figure 1 is a sectional elevation of my improved ice-cream freezer,

Figure 2, a. sectional plan' view on the line 1' 2, fig. 1, and

Figure 3 a detached perspective view, showing a portion of my invention.

The frame, A, ofthe freezer consists of two stands, band b', and to the stand is secured a. large disk, B, in the centre of which is a ben'ing'for one of' the'trunnion`s,'d, of a vessel, Cythe opposite trunnion, d', of the said'vessel turning ina suitable bearing on the stand b ofthe frame. These trunnions are secured to the sides ofthe vessel C at a point about midway between the opposite ends of the same, and at the outer end ofthe trun'nion d isY a crank, c, by means of which the vessel is turned, a spring,f, bearing against the end of the trunnion d', for a purposedescribed hereafter. The staves forming the sides of the vessel C are bound together by the usual hoops, g, and the detachable topI or cover is secured to the vessel by means of the tighteningband t', the opposite ends of which can be drawn together by operating a curved cam-lever, i', as shown by-dotted vlines, g. 2,4 thus tightening the stoves of the vessel, and causing them to gripe the edge of the'cover Dtas ldescribed in the patent granted to me on the eleventh day of August, 1863.

The vessel C is held in the vertical position shown in g. 1, and prevented from turning on the frame by a hook, e', on the stand b, entering a staple at the lower end of the vessel. -Within thevessel C, and resting upon the bottoni' of the same, is placed an'inner vessel, E, of tinned iron, zinc, or other thin metal, which is adjusted to n. central position, and prevented from moving laterally in theoutervessel by means'of three or more projections, j, in the latter, as shown in iig. 2. The vessel E is prevented from moving longitudinally within the vessel C by means of the cover-D, which bears upon the wooden cover c of the inner vessel, the contents of which are prevented from escaping by means of a gum ring, le', which intervenes between the vessel and its cover', as shown in iig. 1. A spindle, G, turns in the cover D, and in a step, Z, at the bottom ofthe vessel F, a friction-wheel, m, being secured to the outer end of the spindle by a. nut, n, in such a manner'as to be readily detached. The wheel m is in the present instance edged with gum-elastic, and is caused to bear against the disk B by the `spring f of the trunnion d', so that when the vessel C is turned the wheel m and spindle Gi will revolve. If desired, instead ofthe frictiongear above described, a cog-wheel gearing into teeth on the face of thc disk I3 muy be substituted for the wheel m.

lhe lower squared portion of the spindle Gr passes through a square socket, H, which rests upon the step latthc bottoni ofthe vessel E, and has two projecting curved arms, p and p', (see fig. 3,) and a similar socket, Il', rests upon a shoulder, q, of the spindle, near to the opposite end of the vessel E. A spindle, r, is arranged to turn in the opposite arms 2J, and a similar spindle in the arms p', and from each ofthe spindles projects a curved vane or scraper, s, of a length equal to the distance between the arms in which its spindle turns; and the motion of the Scrapers is limited by lugs, t, projecting from each of the arms p and p', as clearly shown in. the perspective, view, fig. 3.

'.lhe scrapcrs c are made of thin sheet metal, and are so curved that they shall be elastic and adapt them Asel-ves to the sides ofthe vessel E. o

The vessels C and E are tnrnedupon their trunnions by the crank e, and at the same time, by means of the wheel on, the spindle G and dasher within the vessel F are caused to rotate in the direction of the arrows,

g. 2. By this combined motion, the cream contained in the vessel E is thrown from end to end of the latter,

anddriven around it by the action ofthe revolving dasher, the whole of the mass ot cream being thus thoroughly agitated and exposed to the action ot' the ice contained'in the annular space between the two vessels. The Scrapers s are, by the weight of the mass in front ot' them, forced backward until they are in close contact with the sides of the vessel E, from which the frozen portion of the cream in thus scraped and thrown towards the centre ofthe vessel to make way for the fluid portion ofthe mass, which is in turn frozen and scraped from the sides until all the cream has been reduced to the proper state. l

/ The above'process is rapid and effectual, the cream being so thoroughlyr agitated during the operation that the frozen cream is uniform and free Vfrom lumps.

As soon as the operation is completed, the apparatus is secured inithe upright position shown in iig. Il, the nut n loosened, and the wheel m removed. The Vcam-lever I is .then turned outwards, and the covers are removed 'from the vessels C and E, after which the socltet H is removed from the latter vessel,l andthe spindle Gr and Scrapers are drawn verticallyT from the mass ofl frozen cream. The 'spindle G and the scrapers arefree from projections, and very little, if any, of the frozen material adheres to them vas they are drawn out, an advantage which is possessed by my nventon over the dashers in common use, which are generally cas-t in one piece. After the withdrawal ot` the spindle and serapers, the frozen cream may be taken from the vessel as it is required for use, the lower socket H remaining at the bottom until the greater part of the cream has been removed, when it may be withdrawn and cleaned preparatory to the second filling of the vessel with cream to be frozen. l

I claim as my invention, and desire to secure by Letters Patentl. The vessel E, its dasher-spindle G, and wheel m, in combination with the outer revolving vessel C and the stationary disk or wheel B, the whole being constructed and arranged for joint action, substantially as and for the purpose herein set forth.

2. 'lhe within-described dasher, composed of arms p and p', adapted to the spindle G and elastic Scrapers s on spindles hung to the said arms, all substantially as and for the purpose herein set forth.

In testimony whereof, I have signed my naine to this specification in the presence of two subscribing witnesses.

JOHN TINGLEY.

Witnesses:

JOHN WHITE, W. J. R. DELANY. 

